His father Schmuel Daum was an important educator, writer, and communal figure, hailing from a prominent rabbinic family from Poland and Bohemia.

Declining the offer to continue his studies in order to obtain the title of Dayan, he returned to Europe where he married Francine Frenkel with whom he has three daughters.

One of Daum's first tasks as community Rabbi in Frankfurt am Main was to resolve the challenging problem of clarifying the Jewish status of the newcomers.

He had been supervising the Kashrut of the community institutions, such as the restaurants, the butcher shops, kosher meals for Lufthansa and occasional celebrations, like Bar-/Bat Mitzvahs and marriages in big hotels.

Together with this father, Shmuel Daum, he regularly organized Kabbalat Shabbat youth-Minyanim in the Baumweg Synagogue and during his time in office he had also been the Av Beth Din of Frankfurt.

Regarding Giyurim Rabbi Daum has the experience from both the perspective of a religious Rabbinical judge (Beth Din), as well as a teacher and mentor.

Since 2001 he also started, along with his wife, a series of outreach projects for Baalei Tshuva, non-Jews interested in Jewish studies and prospective converts to Judaism.

Rabbi Ahron Daum was a prolific author who has written on a diverse scope of topics within the field of Jewish studies.

Whilst living in Switzerland he was a regular contributor of Halachic articles to the Jewish Swiss-German weekly "Jüdische Rundschau".

This work is unique in that it was the first book written in German during the post-war period that comprehensively deals with Halachic issues in the Responsa literature.

It is a two-volume anthology combining Halachic articles, sermons, liturgical remarks, homiletic thoughts and folkloric and humorous tales connected to the Jewish holidays and Shabbat.